2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/dev/wi/if_wireg.h,v 1.31.2.2 2002/08/02 07:11:34 imp Exp $
36 #define WI_TIMEOUT (500000/WI_DELAY) /* 500 ms */
45 #define WI_PCI_LMEMRES 0x10 /* PCI Memory (native PCI implementations) */
46 #define WI_PCI_LOCALRES 0x14 /* The PLX chip's local registers */
47 #define WI_PCI_MEMRES 0x18 /* The PCCard's attribute memory */
48 #define WI_PCI_IORES 0x1C /* The PCCard's I/O space */
50 #define WI_LOCAL_INTCSR 0x4c
51 #define WI_LOCAL_INTEN 0x40
52 #define WI_HFA384X_SWSUPPORT0_OFF 0x28
53 #define WI_PRISM2STA_MAGIC 0x4A2D
54 #define WI_HFA384X_PCICOR_OFF 0x26
56 /* Default port: 0 (only 0 exists on stations) */
57 #define WI_DEFAULT_PORT (WI_PORT0 << 8)
59 /* Default TX rate: 2Mbps, auto fallback */
60 #define WI_DEFAULT_TX_RATE 3
62 /* Default network name: ANY */
64 * [sommerfeld 1999/07/15] Changed from "ANY" to ""; according to Bill Fenner,
65 * ANY is used in MS driver user interfaces, while "" is used over the
68 #define WI_DEFAULT_NETNAME ""
70 #define WI_DEFAULT_AP_DENSITY 1
72 #define WI_DEFAULT_RTS_THRESH 2347
74 #define WI_DEFAULT_DATALEN 2304
76 #define WI_DEFAULT_CREATE_IBSS 0
78 #define WI_DEFAULT_PM_ENABLED 0
80 #define WI_DEFAULT_MAX_SLEEP 100
82 #define WI_DEFAULT_ROAMING 1
84 #define WI_DEFAULT_AUTHTYPE 1
87 #define OS_STRING_NAME "NetBSD"
90 #define OS_STRING_NAME "FreeBSD"
93 #define OS_STRING_NAME "OpenBSD"
96 #define WI_DEFAULT_NODENAME OS_STRING_NAME " WaveLAN/IEEE node"
98 #define WI_DEFAULT_IBSS OS_STRING_NAME " IBSS"
100 #define WI_DEFAULT_CHAN 3
102 #define WI_BUS_PCCARD 0 /* pccard device */
103 #define WI_BUS_PCI_PLX 1 /* PCI card w/ PLX PCI/PCMICA bridge */
104 #define WI_BUS_PCI_NATIVE 2 /* native PCI device (Prism 2.5) */
107 * register space access macros
109 #define CSR_WRITE_4(sc, reg, val) \
110 bus_space_write_4((sc)->wi_btag, (sc)->wi_bhandle, \
111 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
112 #define CSR_WRITE_2(sc, reg, val) \
113 bus_space_write_2((sc)->wi_btag, (sc)->wi_bhandle, \
114 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
115 #define CSR_WRITE_1(sc, reg, val) \
116 bus_space_write_1((sc)->wi_btag, (sc)->wi_bhandle, \
117 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg), val)
119 #define CSR_READ_4(sc, reg) \
120 bus_space_read_4((sc)->wi_btag, (sc)->wi_bhandle, \
121 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
122 #define CSR_READ_2(sc, reg) \
123 bus_space_read_2((sc)->wi_btag, (sc)->wi_bhandle, \
124 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
125 #define CSR_READ_1(sc, reg) \
126 bus_space_read_1((sc)->wi_btag, (sc)->wi_bhandle, \
127 (sc)->wi_bus_type == WI_BUS_PCI_NATIVE ? (reg)*2 : (reg))
129 #define CSM_WRITE_1(sc, off, val) \
130 bus_space_write_1((sc)->wi_bmemtag, (sc)->wi_bmemhandle, off, val)
132 #define CSM_READ_1(sc, off) \
133 bus_space_read_1((sc)->wi_bmemtag, (sc)->wi_bmemhandle, off)
136 * The WaveLAN/IEEE cards contain an 802.11 MAC controller which Lucent
137 * calls 'Hermes.' In typical fashion, getting documentation about this
138 * controller is about as easy as squeezing blood from a stone. Here
139 * is more or less what I know:
141 * - The Hermes controller is firmware driven, and the host interacts
142 * with the Hermes via a firmware interface, which can change.
144 * - The Hermes is described in a document called: "Hermes Firmware
145 * WaveLAN/IEEE Station Functions," document #010245, which of course
146 * Lucent will not release without an NDA.
148 * - Lucent has created a library called HCF (Hardware Control Functions)
149 * though which it wants developers to interact with the card. The HCF
150 * is needlessly complex, ill conceived and badly documented. Actually,
151 * the comments in the HCP code itself aren't bad, but the publically
152 * available manual that comes with it is awful, probably due largely to
153 * the fact that it has been emasculated in order to hide information
154 * that Lucent wants to keep proprietary. The purpose of the HCF seems
155 * to be to insulate the driver programmer from the Hermes itself so that
156 * Lucent has an excuse not to release programming in for it.
158 * - Lucent only makes available documentation and code for 'HCF Light'
159 * which is a stripped down version of HCF with certain features not
160 * implemented, most notably support for 802.11 frames.
162 * - The HCF code which I have seen blows goats. Whoever decided to
163 * use a 132 column format should be shot.
165 * Rather than actually use the Lucent HCF library, I have stripped all
166 * the useful information from it and used it to create a driver in the
167 * usual BSD form. Note: I don't want to hear anybody whining about the
168 * fact that the Lucent code is GPLed and mine isn't. I did not actually
169 * put any of Lucent's code in this driver: I only used it as a reference
170 * to obtain information about the underlying hardware. The Hermes
171 * programming interface is not GPLed, so bite me.
175 * Size of Hermes & Prism2 I/O space.
177 #define WI_IOSIZ 0x40
180 * Hermes & Prism2 register definitions
183 /* Hermes command/status registers. */
184 #define WI_COMMAND 0x00
185 #define WI_PARAM0 0x02
186 #define WI_PARAM1 0x04
187 #define WI_PARAM2 0x06
188 #define WI_STATUS 0x08
189 #define WI_RESP0 0x0A
190 #define WI_RESP1 0x0C
191 #define WI_RESP2 0x0E
193 /* Command register values. */
194 #define WI_CMD_BUSY 0x8000 /* busy bit */
195 #define WI_CMD_INI 0x0000 /* initialize */
196 #define WI_CMD_ENABLE 0x0001 /* enable */
197 #define WI_CMD_DISABLE 0x0002 /* disable */
198 #define WI_CMD_DIAG 0x0003
199 #define WI_CMD_ALLOC_MEM 0x000A /* allocate NIC memory */
200 #define WI_CMD_TX 0x000B /* transmit */
201 #define WI_CMD_NOTIFY 0x0010
202 #define WI_CMD_INQUIRE 0x0011
203 #define WI_CMD_ACCESS 0x0021
204 #define WI_CMD_PROGRAM 0x0022
206 #define WI_CMD_CODE_MASK 0x003F
209 * Reclaim qualifier bit, applicable to the
210 * TX and INQUIRE commands.
212 #define WI_RECLAIM 0x0100 /* reclaim NIC memory */
215 * ACCESS command qualifier bits.
217 #define WI_ACCESS_READ 0x0000
218 #define WI_ACCESS_WRITE 0x0100
221 * PROGRAM command qualifier bits.
223 #define WI_PROGRAM_DISABLE 0x0000
224 #define WI_PROGRAM_ENABLE_RAM 0x0100
225 #define WI_PROGRAM_ENABLE_NVRAM 0x0200
226 #define WI_PROGRAM_NVRAM 0x0300
228 /* Status register values */
229 #define WI_STAT_CMD_CODE 0x003F
230 #define WI_STAT_DIAG_ERR 0x0100
231 #define WI_STAT_INQ_ERR 0x0500
232 #define WI_STAT_CMD_RESULT 0x7F00
234 /* memory handle management registers */
235 #define WI_INFO_FID 0x10
236 #define WI_RX_FID 0x20
237 #define WI_ALLOC_FID 0x22
238 #define WI_TX_CMP_FID 0x24
241 * Buffer Access Path (BAP) registers.
242 * These are I/O channels. I believe you can use each one for
243 * any desired purpose independently of the other. In general
244 * though, we use BAP1 for reading and writing LTV records and
245 * reading received data frames, and BAP0 for writing transmit
246 * frames. This is a convention though, not a rule.
252 #define WI_DATA0 0x36
253 #define WI_DATA1 0x38
254 #define WI_BAP0 WI_DATA0
255 #define WI_BAP1 WI_DATA1
257 #define WI_OFF_BUSY 0x8000
258 #define WI_OFF_ERR 0x4000
259 #define WI_OFF_DATAOFF 0x0FFF
261 /* Event registers */
262 #define WI_EVENT_STAT 0x30 /* Event status */
263 #define WI_INT_EN 0x32 /* Interrupt enable/disable */
264 #define WI_EVENT_ACK 0x34 /* Ack event */
267 #define WI_EV_TICK 0x8000 /* aux timer tick */
268 #define WI_EV_RES 0x4000 /* controller h/w error (time out) */
269 #define WI_EV_INFO_DROP 0x2000 /* no RAM to build unsolicited frame */
270 #define WI_EV_NO_CARD 0x0800 /* card removed (hunh?) */
271 #define WI_EV_DUIF_RX 0x0400 /* wavelan management packet received */
272 #define WI_EV_INFO 0x0080 /* async info frame */
273 #define WI_EV_CMD 0x0010 /* command completed */
274 #define WI_EV_ALLOC 0x0008 /* async alloc/reclaim completed */
275 #define WI_EV_TX_EXC 0x0004 /* async xmit completed with failure */
276 #define WI_EV_TX 0x0002 /* async xmit completed succesfully */
277 #define WI_EV_RX 0x0001 /* async rx completed */
280 (WI_EV_RX|WI_EV_TX|WI_EV_TX_EXC|WI_EV_ALLOC|WI_EV_INFO|WI_EV_INFO_DROP)
282 /* Host software registers */
286 #define WI_SW3 0x2E /* does not appear in Prism2 */
290 #define WI_CNTL_AUX_ENA 0xC000
291 #define WI_CNTL_AUX_ENA_STAT 0xC000
292 #define WI_CNTL_AUX_DIS_STAT 0x0000
293 #define WI_CNTL_AUX_ENA_CNTL 0x8000
294 #define WI_CNTL_AUX_DIS_CNTL 0x4000
296 #define WI_AUX_PAGE 0x3A
297 #define WI_AUX_OFFSET 0x3C
298 #define WI_AUX_DATA 0x3E
300 #define WI_COR_OFFSET 0x3e0
301 #define WI_COR_VALUE 0x41
304 * One form of communication with the Hermes is with what Lucent calls
305 * LTV records, where LTV stands for Length, Type and Value. The length
306 * and type are 16 bits and are in native byte order. The value is in
307 * multiples of 16 bits and is in little endian byte order.
318 u_int16_t wi_str[17];
321 #define WI_SETVAL(recno, val) \
323 struct wi_ltv_gen g; \
327 g.wi_val = htole16(val); \
328 wi_write_record(sc, &g); \
331 #define WI_SETSTR(recno, str) \
333 struct wi_ltv_str s; \
336 l = (strlen(str) + 1) & ~0x1; \
337 bzero((char *)&s, sizeof(s)); \
338 s.wi_len = (l / 2) + 2; \
340 s.wi_str[0] = htole16(strlen(str)); \
341 bcopy(str, (char *)&s.wi_str[1], strlen(str)); \
342 wi_write_record(sc, (struct wi_ltv_gen *)&s); \
346 * Download buffer location and length (0xFD01).
348 struct wi_ltv_dnld_buf {
351 u_int16_t wi_buf_pg; /* page addr of intermediate dl buf*/
352 u_int16_t wi_buf_off; /* offset of idb */
353 u_int16_t wi_buf_len; /* len of idb */
357 * Mem sizes (0xFD02).
359 struct wi_ltv_memsz {
362 u_int16_t wi_mem_ram;
363 u_int16_t wi_mem_nvram;
367 * NIC Identification (0xFD0B, 0xFD20)
375 /* define card ident */
376 #define WI_NIC_LUCENT_ID 0x0001
377 #define WI_NIC_LUCENT_STR "Lucent Technologies, WaveLAN/IEEE"
379 #define WI_NIC_SONY_ID 0x0002
380 #define WI_NIC_SONY_STR "Sony WaveLAN/IEEE"
382 #define WI_NIC_LUCENT_EMB_ID 0x0005
383 #define WI_NIC_LUCENT_EMB_STR "Lucent Embedded WaveLAN/IEEE"
385 #define WI_NIC_EVB2_ID 0x8000
386 #define WI_NIC_EVB2_STR "RF:PRISM2 MAC:HFA3841"
388 #define WI_NIC_HWB3763_ID 0x8001
389 #define WI_NIC_HWB3763_STR "RF:PRISM2 MAC:HFA3841 CARD:HWB3763 rev.B"
391 #define WI_NIC_HWB3163_ID 0x8002
392 #define WI_NIC_HWB3163_STR "RF:PRISM2 MAC:HFA3841 CARD:HWB3163 rev.A"
394 #define WI_NIC_HWB3163B_ID 0x8003
395 #define WI_NIC_HWB3163B_STR "RF:PRISM2 MAC:HFA3841 CARD:HWB3163 rev.B"
397 #define WI_NIC_EVB3_ID 0x8004
398 #define WI_NIC_EVB3_STR "RF:PRISM2 MAC:HFA3842 CARD:HFA3842 EVAL"
400 #define WI_NIC_HWB1153_ID 0x8007
401 #define WI_NIC_HWB1153_STR "RF:PRISM1 MAC:HFA3841 CARD:HWB1153"
403 #define WI_NIC_P2_SST_ID 0x8008 /* Prism2 with SST flush */
404 #define WI_NIC_P2_SST_STR "RF:PRISM2 MAC:HFA3841 CARD:HWB3163-SST-flash"
406 #define WI_NIC_EVB2_SST_ID 0x8009
407 #define WI_NIC_EVB2_SST_STR "RF:PRISM2 MAC:HFA3841 CARD:HWB3163-SST-flash"
409 #define WI_NIC_3842_EVA_ID 0x800A /* 3842 Evaluation Board */
410 #define WI_NIC_3842_EVA_STR "RF:PRISM2 MAC:HFA3842 CARD:HFA3842 EVAL"
412 #define WI_NIC_3842_PCMCIA_AMD_ID 0x800B /* Prism2.5 PCMCIA */
413 #define WI_NIC_3842_PCMCIA_SST_ID 0x800C
414 #define WI_NIC_3842_PCMCIA_ATM_ID 0x800D
415 #define WI_NIC_3842_PCMCIA_STR "RF:PRISM2.5 MAC:ISL3873"
417 #define WI_NIC_3842_MINI_AMD_ID 0x8012 /* Prism2.5 Mini-PCI */
418 #define WI_NIC_3842_MINI_SST_ID 0x8013
419 #define WI_NIC_3842_MINI_ATM_ID 0x8014
420 #define WI_NIC_3842_MINI_STR "RF:PRISM2.5 MAC:ISL3874A(Mini-PCI)"
422 #define WI_NIC_3842_PCI_AMD_ID 0x8016 /* Prism2.5 PCI-bridge */
423 #define WI_NIC_3842_PCI_SST_ID 0x8017
424 #define WI_NIC_3842_PCI_ATM_ID 0x8018
425 #define WI_NIC_3842_PCI_STR "RF:PRISM2.5 MAC:ISL3874A(PCI-bridge)"
427 #define WI_NIC_P3_PCMCIA_AMD_ID 0x801A /* Prism3 PCMCIA */
428 #define WI_NIC_P3_PCMCIA_SST_ID 0x801B
429 #define WI_NIC_P3_PCMCIA_STR "RF:PRISM3(PCMCIA)"
431 #define WI_NIC_P3_MINI_AMD_ID 0x8021 /* Prism3 Mini-PCI */
432 #define WI_NIC_P3_MINI_SST_ID 0x8022
433 #define WI_NIC_P3_MINI_STR "RF:PRISM3(Mini-PCI)"
436 * List of intended regulatory domains (0xFD11).
438 struct wi_ltv_domains {
441 u_int16_t wi_domains[6];
445 * CIS struct (0xFD13).
450 u_int16_t wi_cis[240];
454 * Communications quality (0xFD43).
456 struct wi_ltv_commqual {
459 u_int16_t wi_coms_qual;
460 u_int16_t wi_sig_lvl;
461 u_int16_t wi_noise_lvl;
465 * Actual system scale thresholds (0xFC06, 0xFD46).
467 struct wi_ltv_scalethresh {
470 u_int16_t wi_energy_detect;
471 u_int16_t wi_carrier_detect;
473 u_int16_t wi_cell_search;
474 u_int16_t wi_out_of_range;
475 u_int16_t wi_delta_snr;
479 * PCF info struct (0xFD87).
484 u_int16_t wi_energy_detect;
485 u_int16_t wi_carrier_detect;
487 u_int16_t wi_cell_search;
492 * Connection control characteristics. (0xFC00)
493 * 0 == IBSS (802.11 compliant mode) (Only PRISM2)
494 * 1 == Basic Service Set (BSS)
495 * 2 == Wireless Distribudion System (WDS)
497 * (Only PRISM2; not 802.11 compliant mode, testing use only)
498 * 6 == HOST AP (Only PRISM2)
500 #define WI_PORTTYPE_BSS 0x1
501 #define WI_PORTTYPE_WDS 0x2
502 #define WI_PORTTYPE_ADHOC 0x3
503 #define WI_PORTTYPE_IBSS 0x4
504 #define WI_PORTTYPE_AP 0x6
507 * Mac addresses. (0xFC01, 0xFC08)
509 struct wi_ltv_macaddr {
512 u_int16_t wi_mac_addr[3];
516 * Station set identification (SSID). (0xFC02, 0xFC04)
525 * Set our station name. (0xFC0E)
527 struct wi_ltv_nodename {
530 u_int16_t wi_nodename[17];
534 * Multicast addresses to be put in filter. We're
535 * allowed up to 16 addresses in the filter. (0xFC80)
537 struct wi_ltv_mcast {
540 struct ether_addr wi_mcast[16];
544 * supported rates. (0xFCB4)
546 #define WI_SUPPRATES_1M 0x0001
547 #define WI_SUPPRATES_2M 0x0002
548 #define WI_SUPPRATES_5M 0x0004
549 #define WI_SUPPRATES_11M 0x0008
550 #define WI_RATES_BITS "\20\0011M\0022M\0035.5M\00411M"
553 * Information frame types.
555 #define WI_INFO_NOTIFY 0xF000 /* Handover address */
556 #define WI_INFO_COUNTERS 0xF100 /* Statistics counters */
557 #define WI_INFO_SCAN_RESULTS 0xF101 /* Scan results */
558 #define WI_INFO_LINK_STAT 0xF200 /* Link status */
559 #define WI_INFO_ASSOC_STAT 0xF201 /* Association status */
562 * Hermes transmit/receive frame structure
565 u_int16_t wi_status; /* 0x00 */
566 u_int16_t wi_rsvd0; /* 0x02 */
567 u_int16_t wi_rsvd1; /* 0x04 */
568 u_int16_t wi_q_info; /* 0x06 */
569 u_int16_t wi_rsvd2; /* 0x08 */
570 u_int8_t wi_tx_rtry; /* 0x0A */
571 u_int8_t wi_tx_rate; /* 0x0B */
572 u_int16_t wi_tx_ctl; /* 0x0C */
573 u_int16_t wi_frame_ctl; /* 0x0E */
574 u_int16_t wi_id; /* 0x10 */
575 u_int8_t wi_addr1[6]; /* 0x12 */
576 u_int8_t wi_addr2[6]; /* 0x18 */
577 u_int8_t wi_addr3[6]; /* 0x1E */
578 u_int16_t wi_seq_ctl; /* 0x24 */
579 u_int8_t wi_addr4[6]; /* 0x26 */
580 u_int16_t wi_dat_len; /* 0x2C */
581 u_int8_t wi_dst_addr[6]; /* 0x2E */
582 u_int8_t wi_src_addr[6]; /* 0x34 */
583 u_int16_t wi_len; /* 0x3A */
584 u_int16_t wi_dat[3]; /* 0x3C */ /* SNAP header */
585 u_int16_t wi_type; /* 0x42 */
588 #define WI_802_3_OFFSET 0x2E
589 #define WI_802_11_OFFSET 0x44
590 #define WI_802_11_OFFSET_RAW 0x3C
591 #define WI_802_11_OFFSET_HDR 0x0E
593 #define WI_STAT_BADCRC 0x0001
594 #define WI_STAT_UNDECRYPTABLE 0x0002
595 #define WI_STAT_ERRSTAT 0x0003
596 #define WI_STAT_MAC_PORT 0x0700
597 #define WI_STAT_1042 0x2000 /* RFC1042 encoded */
598 #define WI_STAT_TUNNEL 0x4000 /* Bridge-tunnel encoded */
599 #define WI_STAT_WMP_MSG 0x6000 /* WaveLAN-II management protocol */
600 #define WI_STAT_MGMT 0x8000 /* 802.11b management frames */
601 #define WI_RXSTAT_MSG_TYPE 0xE000
603 #define WI_ENC_TX_802_3 0x00
604 #define WI_ENC_TX_802_11 0x11
605 #define WI_ENC_TX_MGMT 0x08
606 #define WI_ENC_TX_E_II 0x0E
608 #define WI_ENC_TX_1042 0x00
609 #define WI_ENC_TX_TUNNEL 0xF8
611 #define WI_TXCNTL_MACPORT 0x00FF
612 #define WI_TXCNTL_STRUCTTYPE 0xFF00
613 #define WI_TXCNTL_TX_EX 0x0004
614 #define WI_TXCNTL_TX_OK 0x0002
615 #define WI_TXCNTL_NOCRYPT 0x0080
618 * SNAP (sub-network access protocol) constants for transmission
619 * of IP datagrams over IEEE 802 networks, taken from RFC1042.
620 * We need these for the LLC/SNAP header fields in the TX/RX frame
623 #define WI_SNAP_K1 0xaa /* assigned global SAP for SNAP */
624 #define WI_SNAP_K2 0x00
625 #define WI_SNAP_CONTROL 0x03 /* unnumbered information format */
626 #define WI_SNAP_WORD0 (WI_SNAP_K1 | (WI_SNAP_K1 << 8))
627 #define WI_SNAP_WORD1 (WI_SNAP_K2 | (WI_SNAP_CONTROL << 8))
628 #define WI_SNAPHDR_LEN 0x6
629 #define WI_FCS_LEN 0x4